Handheld portable surface gages are easy to use. But that doesn’t mean there aren’t challenges when scanning hundreds or even thousands of parts.
If you’re interested in calibrating your own digital, dial or Vernier calipers, here are some steps to take to make sure it goes off without a hitch.
Performing surface finish measurements on large or complex parts can be made much easier with properly designed fixturing.
There are many digital calipers specifically designed as depth gages. They share some common features but come in a variety of styles. Here are several to consider.
With intelligent amplifiers providing measuring capabilities and easier setups, it’s easier than ever to understand what is going on in the manufacturing process in real time.
A CMM, a bore mic and an air gage measure parts differently and may provide different values, yet all of them may be correct. Here’s how.
By understanding the characteristics of three types of gages, you can choose the correct one for your application.
Three ways to control the clearance between critical-fit parts.
Today’s digital indicators are not only replacing dial indicators in some instances, but they are also approaching the performance of bench amplifiers at a fraction of the cost.
All the details of the measuring process must be uncovered.
Gages and measuring instruments come in different shapes and sizes. Whether it be a snap gage, a bench stand, a surface-finish gage or even a form system, keeping the “measuring loop” as small or as short as possible is important for better gage performance.
The many design modifications available in snap gages enables them to measure some of the most difficult dimensions, right at the point of manufacture.
Match your micrometer choice to your specific machine shop needs.
Tight, clean and dry: The requirements of air gaging aren’t very different from mechanical gaging.
Optical metrology is providing more information, faster, about surfaces that were once impossible to measure and understand.
All fixtures for part gaging will have some amount of deflection or spring rate that can affect measurement accuracy. A better understanding of spring rate can enable quality control inspectors to detect and eliminate this possible error source.
Subjective surface finishes have no place in today’s high-precision manufacturing environment.
Dial and test indicators are close cousins. They are both mechanical magnifying devices used for dimensional comparison.
Knowing only the average roughness may not be enough. Other surface parameters can affect product quality.
Even the old, reliable gage is subject to wear.